Jet apparatus.



M. LEBLANG.

JET APPARATUS.

APPLICATION FILED 11111.31, 1910.

Patented Aug. 22, 1911.

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1h whom it may concern:

Be it known that I, MAURICE Lmmnc, a citizen of the Re ublic of France, residmg in Paris, France, avednvented certain new and useful Improvements in Jet Apparatus, of'which the following is a specification.

"s invention relates to an improvement in pumps and specially in apparatus of which the purpose is, to entrain an fluid by any another 11 uid projected at high speed assfrom one recaiveuinto another wherem the pressure is hi er than in the first receiver.

' yinvention may emplo water as a motive liquid, but it is not imited to water and may employ other motive liquids.

Apparatus of this kind may be regarded as composed of three parts. In the first, consisting of one or several nozzles, a high a d is communicated to the motive liquld. n the second, which may be called the wisest the motive fluid entrains the second is characteriz number 0 fluid y friction. In the third, which may ,be called the difluser, the mixed fluids transform the kinetic energy into the work of com vsession.

e jet pum according to this invention by the particular arrangement of its nozzles and its mixer and t i arrangement will be described with referonce to theaccompanying drawings.

Figure 1 is a cross section of the apparatus on line M of Fig. 2 which is a longitudinal section of the apparatus. Since the entraining of one fluid by the other can onl be due to friction, the motive fluid is ro ected through a considerable nozzles a a a, of which the delivery orifices b are situated at the entrance of the difiuser A as shown in Fig. 1. This arrangement admits of developin as much as may be desired the surface of t e motive stream, the friction with which is to serve ell the purpose in question.

x of the other fluid in proportionas the the mixer. Experience has shown iiiti such an arran ement all of the w W have as a sin e stream the surface 0 ,"ch is channel The central a practically no entraining eifect. 'In 0 avoid this objection the nozzles are nrra L 1 in concentric zones in euro plan as ll represented in Fig. 2. In this figure it! supposed by way of example that thereiiiim 24 nozzles alike distributed on the circumferences of three concentric circles, na acircle of four nozzles a, a circle nozzles a and a circle of 12 nozzles a. .1 w a rtures of such nozzles are situated militia 1 p anes 1-1, 2-2, 3-3 at difl'erent i tances from the entrance to the difluser' plane 1 -1, which contains the orifices ll is the nearest to the entrance of the dill proper A which entrance maybe said ttflllbe situated in the plane 4-4.

The fluid which is to be entrained it motive streams issuing from the four trail nozzles a comesin contact with id streams by passing through the spaces ii tween the other nozzles a, a, or the w s: carrying the nozzles as is indicated byjiipr 0'0 rows '5. sp w The cross section of these remains constant and cannot be obst a 2 by the spreading of the streams issuing the nozzles of the two surrounding n 1: a, a. If the sectionof these spaces is auf- Mt ficiently large for a. fluid drawn in to t vcrse them at a low speed, this fl uid I into contact with the-streams issuing w y the central nozzles as if they alone exi The distance between planes 1--1 and should be such that these central atreama 'ibn arrivin at the plane 2 have entrained at mass 0 fluid which they are capable of" n training; and their action is not aflectedii y the fact that the streams issuing from i d intermediate zone of nozzles forms a so around the first-named streams. The to be entrained y he streams issuing fied of the motive fluid is mama-byla n rec 4 the same speed at all points.

.arrives at plane 8-8 it has also entrained all the mass of fluid which it is capable of entraining and its action will not be affected by the fact that the surrounding fluid is prevented from flowing toward these streams. Finally the fluid to be entrained bi the issuing from the nozzles of t e outside zone. comes into contact with these streams by flowi along paths, such as those re resented iy the arrows 7. Owing, there ore, to this particular arrangement of the mixer the fluid to be entrained comes into contact with the streams of the central zone as easily as with those of the outside zone. In this manner not only is the available surface for friction thoroughly used, but there is forwarded into the di user the resultant stream which is homogeneous and has very a is is an essential of good output of the difiuser.

In F 1 and 2 there are twenty-four nozzles istributed in three concentric zones. It will be understood that this number has been selected merely as an example and that the numbers! ascertained the roximately and of zones may be 1s amble av ng now particularly described and formed, I declare that what I claim is 10A et apparatus provided with a number of 1st nozzles distributed in concentric zones in successive planes in such a manner that the delivery orifices of the nozzles are farther from the entrance to the difiuser the nearertheaxesofthenozzlesaretothsaxisof the difiuser and through whichthe motive liquid is projected.

2. A jet apggatus having numerous motive liquid tu provided with contracted orifices which are of various distances from the entrance to the difiuser, the orifice of the innermost tubes be' the farthest therefrom and the distances tween the orifices of the remaining, tubes and the entrance to the diffuser diminishing toward the outermost tubes which have their orifices nearest said difluser entrance.

In witnes whereof I have hereunto si ed my name this 16th day of March 1910, in the presence of two subscribing witnesses.

MAURICE LEBLANC. Witn H. 0. Con, P. Imam).

nature of my said invention- 'andmwhatmannerthe'sameistobeper- 

